Question Computer randomly restarts

[chimchar]

I have a GTX 1080 Intel i7 7700 with a 750ww PSU. I have cleaned out all my fans as there was quite a bit of dust on the top fans and on the PSU fan. Once I open any game at all, not google or spotify, only a game- my computer restarts itself after about 10 minutes, sometimes longer. I have tested this with speccy opened on my other monitor and my GPU temp never goes above 60 and my cpu hovers around 50 (celsius) with a game opened. I have no idea what is going on. Also; my PSU makes this weird grinding noise sometimes a bit before it restarts. Also this has never happened before until yesterday. If you need any information lmk, really don't want to have to pay $50 just for some tech guy to tell me that my PSU is busted.

 

[Aeacus]

PSU make and model (or part number) is?

 

[iMatty]

It is clear that your power supply is the problem here.